After one of our guys sucked a rivet from his airbox into his barrell and chewed it to death i have fitted a KN via a tube inside the box, which also pissed off that stupid triangle mess of mesh, might be a better alternative for you, as it seals properly now.
Another guy in the club had a problem where his shrank and went hard ( nathan?) and it wouldnt meet the distance, so he used a radiator hose of the same 57 mm ID and it looks better than the original and actually fits better, it goes straight rather than the dumb curve the normal one has that never seems to line up any way. think he said the hose was from super cheap and was $12, but he got 3 section out of it and did all his other at the same time. also they sell it in colour now if you want factory wank :O)